You *do* know how many different PIC there are ? Are we expected to guess which one *you* are using ? So, What PIC ? Any verification errors from Xwisp ? What is the value of the fuses in the HEX file ? What does your __CONFIG statement look like ? Jan-Erik. Dan Olson wrote: > I've got a Wisp628 programmer that I seem to be having trouble with. > ... > ... > Thanks a lot for any advice. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics